We have a 2003 AD domain with the domain controller being the Certificate Authority. I created a CSR on a 2008 domain member using IIS.

When trying to sign the request I recieved an error--The request contains no certificate template information" I used the certreq command to finally sign it designating the "WebServer" template but not sure if thats correct.

On the 2003 CA Server there is a web portal for Registration Authority (RA). Upload the CSR to the RA in IIS and then the CSR will appear as an item requested certificate in the CA snap-in. Right click and sign the request.